From: MagerValp (MagerValp_at_cling.gu.se)
Date: 2003-03-13 16:18:26
>>>>> "G" == Groepaz <email@example.com> writes: G> uhm...since the c64 port supports the swithlink (which contains G> 6551 aswell) i am surprised it isnt supported in the plus/4 G> port..... should be pretty trivial to make the driver work there G> that is (adjust i/o adress, adjust irq handling, done :=)) I gave it a shot, and IRQ handling was the stumbling block. The Plus/4 only has a single IRQ line for all its devices, and the kernal dispatches IRQs to the corresponding handlers. I wasn't familiar enough with the machine to get it right, and there aren't any good kernal disassemblies out there... -- ___ . . . . . + . . o _|___|_ + . + . + . Per Olofsson, arkadspelare o-o . . . o + MagerValp@cling.gu.se - + + . http://www.cling.gu.se/~cl3polof/ Message was sent through the cbm-hackers mailing list
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